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authorNikunj A. Dadhania <nikunj@linux.vnet.ibm.com>2012-02-17 08:34:30 +0530
committerIngo Molnar <mingo@elte.hu>2012-02-22 12:28:28 +0100
commit62f6536a630affe3176deb48554d27ee58b65077 (patch)
treecf1365f5c0d0b9aebb5877afa8a7b5da4aa11917 /kernel/sched
parent9388dc3047a88bedfd867e9ba3e1980c815ac524 (diff)
sched: Remove rcu_read_lock/unlock() from select_idle_sibling()
select_idle_sibling() is called from select_task_rq_fair(), which already has the RCU read lock held. Signed-off-by: Nikunj A. Dadhania <nikunj@linux.vnet.ibm.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20120217030409.11748.12491.stgit@abhimanyu Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched')
-rw-r--r--kernel/sched/fair.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 4ab60a24ea49..6ce9992926d0 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -2670,8 +2670,6 @@ static int select_idle_sibling(struct task_struct *p, int target)
/*
* Otherwise, iterate the domains and find an elegible idle cpu.
*/
- rcu_read_lock();
-
sd = rcu_dereference(per_cpu(sd_llc, target));
for_each_lower_domain(sd) {
sg = sd->groups;
@@ -2693,8 +2691,6 @@ next:
} while (sg != sd->groups);
}
done:
- rcu_read_unlock();
-
return target;
}